Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Semi-final: (2 matches) The four provincial representatives make up the semi-final pairings. The Munster and Leinster champions will be on opposite sides of the draw. Two teams are eliminated at this stage, while the two winning teams advance to the final.
Final: (1 match) The winners of the two semi-finals contest this game with the winners being declared All-Ireland champions.
Dublin defeated Kilkenny in the Leinster final, however, a subsequent objection was upheld and the result was overturned. Kilkenny were then declared champions and represented the province in the All-Ireland series.
Antrim were nominated as the Ulster representatives in the All-Ireland series. It was the last time the Ulster champions progressed to the All-Ireland semi-final until 1943. The Ulster Championship took place after the completion of the All-Ireland series, which Antrim went on to win.
Sources
Corry, Eoghan, The GAA Book of Lists (Hodder Headline Ireland, 2005).
Donegan, Des, The Complete Handbook of Gaelic Games (DBA Publications Limited, 2005).